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Figure 1 View of the structure of (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level and H atoms are represented as spheres of arbitrary radii [symmetry codes: (i) x + 1, y, −z + ; (ii) x, y, −z + ; (iii) x + 1, y, z; (v) x + 1, −y + 1, −z; (vii) x + 1, −y + 1, z + ; (viii) x + 1, −y + 1, z − ; (ix) x, −y + 1, z − ; (x) x, −y + 1, −z; (xvii) x, −y + 1, z + ; (xviii) x, −y + 1, −z + 1; (xix) x + 1, −y + 1, −z + 1]. |